Bug 6431 - Changing BIOS options renders board ubootable
Summary: Changing BIOS options renders board ubootable
Status: RESOLVED FIXED
Alias: None
Product: MinnowBoard MAX Firmware
Classification: Hardware Platforms
Component: minnowmax-edk2 (show other bugs)
Version: unspecified
Hardware: MinnowBoard Max x86_64
: High critical
Target Milestone: Pre-Production Relea
Assignee: Darren Hart
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Reported: 2014-06-11 16:36 UTC by Darren Hart
Modified: 2014-07-24 23:28 UTC (History)
2 users (show)

See Also:
OS type for building Yocto: ---
Type of Regression: ---
Verified:
Documentation change: Yes (doc changes required)

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Description Darren Hart 2014-06-11 16:36:37 UTC 
Using the following firmware image:

MNW2_IFWI_X64_R_2014_06_06_1723_SecEnabled.bin

If I enter the BIOS menu and update the console size to 80x25 (from 100x31) and the boot menu timeout from 5 to 2 seconds and then reboot, the board powers up (D1 and D2 are lit, but no output appears on the HDMI display and no output appears on the serial console.

Reflashing the image allows the board to reboot.
Comment 1 Darren Hart 2014-06-19 23:26:27 UTC 
David Anders suggested that this may be due to the SPI clock bouncing between 20 and 50 MHz, which has been fixed in the 6/17 test image from David Wei. David Anders will verify the clock fix with a scope and sanity check this failure case as well.
Comment 2 Stephen K Jolley 2014-07-24 23:28:09 UTC 
We believe this was fixed with the firmware fix in bug 6470.  Can no longer reproduce this.